Types of Weight Loss Surgery
Weight loss surgery works to help you lose weight in two main ways: by restricting the amount of food your stomach can hold (which forces you to eat less, and makes you feel fuller sooner), and by bypassing part of your small intestine (which reduces the amount of calories and nutrients you can absorb). Each of the four main types of weight loss surgery uses one or both of these methods.
Roux-en-Y Gastric Bypass
The surgeon creates a small pouch at the top of the stomach, and cuts the small intestine a short distance below the main stomach and connects it to the new pouch. The portion of the intestine still attached to the main stomach is reattached farther down, allowing the digestive juices to flow to the small intestine. This technique restricts the amount of food you can eat, making you feel full after smaller meals, and causes fewer nutrients and calories are absorbed.
Laparoscopic Adjustable Gastric Banding (Lap Band Surgery)
This is a minimally invasive type of surgery that requires only a small incision. The surgeon places a band containing an inflatable balloon around the upper part of your stomach, creating a small pouch above the band with a very narrow opening to the rest of the stomach. A tube connected to the band is run to a port placed under the skin of the abdomen. Fluid can be injected or removed through this port, enables your doctor to adjust the size of the band by inflating or deflating the balloon. This allows for a more gradual process, and a more personalized treatment that can be modified to meet your needs and change as you lose weight.
- Restricts the amount of food that your stomach can hold so you feel full sooner
- Doesn’t reduce the absorption of calories and nutrients
- Least invasive weight loss surgery option
- Shortest recovery period
- Less risk than other surgical options
In a sleeve gastrectomy, part of the stomach is removed. The smaller tube-like stomach that is left cannot hold as much food, and makes less of the hormone that makes you hungry. The result is a decrease in appetite, and feeling fuller sooner when eating. This method does not affect the absorption of calories and nutrients in the intestines.
Biliopancreatic Diversion with Duodenal Switch
The first part of this procedure is the same as a Sleeve Gastrectomy. The second part involves closing off the middle portion of the small intestine so food cannot pass through it, reducing the calories and nutrients that are absorbed by your body. The separated section of intestine is reattached to the end of the intestine so they continue to provide bile and pancreatic digestive juices.